Regarding "Stress management and In Vitro Fertilization (IVF): A pilot randomized controlled trial".

Koumparou et al.1 recently published a randomized controlled trial (RCT) on the effectiveness of psychological interventions (stress management training, SMT) for women planning in vitro fertilization (IVF). They concluded that while the effect of SMT was limited in terms of IVF outcome, it resulted in a significant reduction of stress levels in infertile patients. Since most women undergoing infertility treatment are exposed to high psychological stress,2 this study may be of great value in demonstrating the need for proactive SMT to maintain infertile women's mental health and motivation to continue treatment. However, we are concerned that the reliability of this RCT has been compromised in several ways. First, the registration of the RCT was not clearly stated. According to The CONsolidated Standards of Reporting Trials (CONSORT) 2010 guidelines, a prospective registration of the RCT is required, which prevents unnecessary concerns about the bias of results selection.3,4 Second, the lack of specific figures on the background of the participants in the case and control groups risks distorting the RCT results. The article states that there was no significant difference between the two groups. However, since aging and prolonged infertility treatment increase the psychological burden on infertile patients,5 detailed background information is necessary to interpret the results of an RCT accurately. Selection bias could not be determined, which weakened the validity of this RCT. Furthermore, the absence of any mention of case dropout makes the conclusions of this RCT uncertain; a discussion of cases demonstrating difficulty in completing an 8-week psychological program would clarify whether temporary SMT would show efficacy for patients. Finally, it is essential to note that the details of IVF have not been clarified. Since the timing of the SMT and IVF-ET cycles or details of the IVF-ET protocol were not shown, this RCT could not be used as a reference for IVF facilities to actually operate SMT. There is no doubt that psychological interventions are necessary for infertile patients exposed to high psychological stress, but this RCT has many details that have not been clarified, and the conclusions are attenuated. As details become clearer, this RCT will provide a foundation for the active use of SMT in infertility treatment settings.